yester-

  1. a combining form, now unproductive, occurring in words that denote an extent of time one period prior to the present period, the nature of the period being specified by the second element of the compound: yesterweek.

Origin of yester-

Middle English; Old English geostran, giestron; cognate with Dutch gisteren, German gestern; akin to Latin hesternus of yesterday
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British Dictionary definitions for yester-

yester-

prefix
  1. indicating the day before todayyesterday
  2. indicating a period of time before the present oneyesteryear

Word Origin for yester-

Old English geostran; compare German gestern, Latin hesternus of yesterday
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012